Anata ni wa Kaeru Ie ga Aru (2018)

These two dramas are identical in terms of plot - two couples and they cheat on each other. The dramas revolve around infidelity.

In both dramas there is an unhappy couple and the husband and wife cheat on each other. The dramas revolve around infidelity.

In both dramas there is an unhappy couple and the husband and wife cheat on each other. The dramas revolve around infidelity.

There are no two couples in "Ame ga Furu to Kimi wa Yasashii", but both dramas revolve around infidelity.

These two dramas are identical in terms of plot - two couples and they cheat on each other. The dramas revolve around infidelity.

Another story of two couples and one of them starts cheating which leads to their marriage falling apart.